CVE-2026-54428

Description

Allocation of resources without limits or throttling in the HTTP/2 HPACK decoder in Apache HttpComponents Core (5.4.2 and earlier, 5.5-beta1 and earlier) allows an remote attacker to cause a denial of service through memory exhaustion by sending oversized compressed header blocks before the HTTP/2 SETTINGS acknowledgement causes the configured header list size limit to be applied.

References

https://lists.apache.org/thread/5zjp8vczvxq19pw2rvhs21q446bhl0sd

http://www.openwall.com/lists/oss-security/2026/07/01/3

Details

Source: Mitre, NVD

Risk Information

CVSS v2

CVSS v3